File:Hyde Park Anti-aircraft guns H 993.jpg

DescriptionHyde Park Anti-aircraft guns H 993.jpg QF 3.7 inch anti-aircraft guns in Hyde Park, London in 1939. Date 1939 Source Author War Office official

English: The British Army in the United Kingdom 1939-45 3.7-inch anti-aircraft guns in Hyde Park, London, 1939. Date between 1939 and 1945 date QS:P571